Integration of Calendar with Groups module

Im looking for an integration of an ajax standalone calendar I have into the Groups module.

I have AndrewP's schedular for groups, first and second version, but the calendars are outdated and do not provide the functions I need. Im sure the one I have is pretty much an update onto these two so integration should be along the same lines.

If anyone can assist with this as a paid job, please let me know.

Needs to be done quite quickly as have been waiting on someone else to do it but just never happened.

Integration level

show in group view,

use group permissions - need to be able to choose in group edit what membership level, or group member/non member etc can view / edit the calendar

Also interested into same calendar integrating with profile / account